James c



(ModeL) I v J. C. BEAMER & J. M. RICHARDSON.

NUT LOCK.

Patented Jan. 24,1882.

WITNESSES C4 INVENTOR I W BY K 5 ATTORNEYS Unitas STATES PATENT Orrtcta JAMES (J.-BEAMER AND JOHN M. RICHARDSON, F OARTHAGE, MISSOURI.

NUT-LOCK.

SPECIFICATION" forming part of Letters Patent No. 252,716, dated January 24, 188E Application filed August 15, 1881. (Model) To all whom it may concern;

Be it known that we, JAMEs O. BEAMER and J OHN M. RICHARDSON, of Carthage, in the county of Jasper and State of Missouri, have invented a new and Irrproved Railroad Nut- Lock,'of which the following is a specification.

out over both nuts in the end of a rail.

=Tl1e object of this invention is to preventthc nuts working off the bolts that fasten the fishbars to the rails. The trains running over the track jar and shake the rails and cause the nuts. as ordinarily applied 'to work loose and turn off. NVith this railroad nut lock the nuts cannot work ott', because it will be impossible for the nuts to turn on the bolts.

The invention consists oftwo plates ofstrong sheetiron or other suitable material wide enough to cover the fish-bar, with each edge resting on the rail. Each plate is centrally slotted, and the edges of the slot are turned outward wide enough and longenough to stand These plates are connected at one end with a spiral spring, and their other ends are formed into hooks that go around and under the ends of the fish-bar.

In order to put the nut-lock in position, the plates are pulled apart and the hooked ends fastened to each end of the fish bar,-and when adjusted the spiral spring drawsthe said plates together and tightens them sufficiently to hold them in their places. To remove the nut-lock the two plates are pulled apart from the center.

By the use of this nut-lock the bolts will be protectedZand the constantwatching and tightening of the nuts will be avoided, and the threads of the bolts will be preserved for years, being neither injured nor Worn ofi'.

Figure 1 is a front elevation, showing the improved nut-lock applied to the nuts of the fishplate bolts of arailroad. Fig. 2isa longitudt.

nal section of the same on line at a, Fig. 1. Fig, 3 is a cross-section of the same on line 3 y,Fig. 2. Fig. 4 is a perspective view of a portion of the lock. Fig. 5 is an elevation of the reverse of a portion of the lock.

Similar letters of reference indicate corresponding parts.

In the drawings. A A represent railroadrails, and B B the fish-plates, held thereon by bolts 0 O and nuts D D. 0'

The nut-lock E consists of two plates, F F, united by a spiral spring, G, connecting their inner ends. Each plate F has a horiz ntal opening or slot. a, in its center, designed to be ot the width of a nut, l), and along each side v of the slot (1, is a flange, b, at right angles to the body of the plate F, and designed to fit against the side of a. nut, D, and prevent it from turning. The outer end of each plate F bent down at right angles, as shown at 0, for about the thickness of the fish-plate B, and the extremity of said plate end is l entinward parallel with the body of the plate F, as shown at (1, whereby the end of said plate F is made capable of hooking over the end of any suit- 6 able object, such as the fish-plate B. These plates F, being placed over the nuts D, as. shown, with their hooked ends caughtover the ends of the fish-plate B and their flanges 1) against opposite sides of the nuts D,thespiral 7o spring G draws said plates F together with sufficient force to hold them in their places, and thereby prevent the turning of the nuts 1). We do not claim thebroad idea of udng plates with flanged boltholes for nut-locks, as we are aware that such plates have been made; 7 but,

Having ,thus fully described our invention,

"we claim as new and desire to secure by Let- JAMES C. BEAMER.

. JOHN M. RICHARDSON;

Witnesses:

E. R. WHEELER, JAMES PATTERSON. 

